Order †Ornithischia Seeley, 1887
Parvorder †Genasauria Sereno, 1986
see Clade Genasauria Sereno 1986
Nanorder †Thyreophora Nopcsa, 1915
see Suborder Thyreophora Nopcsa, 1915
Hypoorder †Thyreophoroidea Nopcsa, 1928
see [unranked] Thyreophoroidea Nopcsa, 1928
Minorder †Eurypoda Sereno, 1986
see Clade Eurypoda Sereno 1986
Suborder †Ankylosauria Osborn, 1923
see Infraorder Ankylosauria Osborn, 1923
Family †Ankylosauridae Brown, 1908
Subfamily †Ankylosaurinae Brown, 1908
Genus †Ankylosaurus Brown, 1908